Adjusting tool for tie elements



Jan. 19, 1932 H. H. LAMPERT ADJUSTING TOOL FOR TIE ELEMENTS Filed April16. 1928 Patented Jan. 19, 1932 UNITED STATES HENRY H. LAMPERT, OFCHICAGO, ILLINOIS ADJUSTING TOOL FOR TIE ELEMENTS Application filedApril 16, 1928.

The main objects of this invention are to provide an improved tool foradjusting a tie element relative to a clamp; to provide a tie adjustingtool which is particularly adapted .5 for use in connection with formclamps used in concrete construction work; to provide a form tieadjusting tool having improved means for gripping the tie element; andto provide a tool of this kind having an improved form of bearing memberadapted to straddle the clamp and to fulcrum on a structural shapeengaged by the clamp.

An illustrative embodiment of this invention is shown in theaccompanying drawings, wherein Figure 1 is a fragmentary perspective ofa structural shape, showing also an improved tool fulcrumed thereon inposition to adjust a tie band relative to its clamp.

Fig 2 is an enlarged section taken on the line 22 of Fig. 1.

Fig. 3 is an enlarged fragmentary side elevation, taken from the left ofFig. 1, and showing the tie band in section.

A tool embodying this invention is adapted for use in connection withmany different types of form clamps. In the form herein shown, the toolis used in connection with a tie band 1 and a form clamp 2supported onan I-beam 3, which is surrounded by the usual mold sections, not shown.

In the construction illustrated, the clamp 2 comprises a sheet metalplate 4, having one end curled to provide a bearing hook 5 adapt- -ed toembrace one edge of the beam flange.

Portions of the plate 4: are struck out therefrom to provide recesses 6and overlying bridge portions 7 arranged to provide guideways for thetie band. The bridge portions 7 are bendable when struck with a hammeror similar tool for kinking the tie by forcing portions thereof into therecesses 6 after the tie has been properly adjusted by means of theimproved tool.

In the form shown, the improved tool comprises a shank 8 and a pivotedbearing memher 9.

The shank 8 provides a handle for the tool and its inner end is serratedto form a jaw 10 adapted to grip the outer face of the tie 1.

Serial No. 270,499.

The bearing member 9 includes a cross bar 11 having inclined faces 12and 13 adapted to engage the inner face of the tie. Formed on the crossbar 11, is a pair of spaced ears 14 pivotally connected to the shank 8by a pin 15. The parts are arranged'so that, when the handle 8 is swungto an angular position relative to the bearing member 9, an opening isprovided between the jaw 10' and face 12 for receiving the portion ofthe tie 1 which projects beyond the clamp 2.

Also formed on the cross bar 11, is a pair of depending lugs 16 spacedapart so as to permit the bearing member 9 to straddle the form clamp 2.The lugs 16 are sli htly recessed, as shown at 17 to permit them tofulcrum on the edge of the beam flange on respectively opposite sides ofthe clamp.

The space between the lugs 16 forms a recess for receiving the clamphook 5. The outer face 18 of the cross bar 11 is slightly convex and isadapted to secure the clamp 2 against outward movement during theadjustment of the tie.

In operation, one'end of the tie is inserted through the clamp and thelatter then applied to the I-beam. The tool is then applied to theprojecting end of the tie and placed so as 'to straddle the clamp, withthe edges 17 engaging the beam flange. The tool is then rocked outwardlyso as to pull the tie relative to the clamp.

During the adjustment of the tie relative to the clamp, the outer end ofthe clamp has a tendency to raise from the I-beam but it is forceddownwardly by the cross piece 11.

Although but one specific embodiment of this invention has been hereinshown and described, it will be understood that numerous details of theconstruction shown may be altered or omitted without departing from thespirit of this invention as defined by the following claims.

I claim:

1. A tool for adjusting a form tie relative to its clamp, comprising ashank, means on said shank for gripping the tie, a bearing member havinga recess for receiving part of the clamp to permit said tool to straddlethe clamp, portions of said member located 1 on respectively oppositesides of said recess being adapted to fulcrum on the work engaged bysaid clamp, said bearing member having a bearing face adapted to pressthe clamp into firm contact with the work, and other means on saidbearing member adapted to grip the tie.

2. A tool for adjusting a form tie relative to its clamp comprising ashank, means on said shank for gripping the tie, a bearing memberincluding a cross bar and a pair of spaced lugs adapted to straddle theclamp to permit said lugs to fulcrum on the work engaged by said clamp,said cross bar having a convex bearing face adapted to press the claminto firm contact with the work, and anot er face on said cross baradapted to grip the tie.

3. tool for adjusting a form tie relativeto its clamp comprising ashank, a bearing member including a cross bar, a pair of spaced earsarranged on said cross bar and pivotally connected to said shank, a jawformed on the inner end of said shank, said jaw and cross bar beingadapted to grip the tie, and a pair of spaced bearing lugs dependingfrom said cross bar and having recessed edges adapted to fulcrum on thework engaged by the clamp, said cross bar having a bearing face adaptedto press the clamp into firm contact with the work.

Signed at Chicago this 13th day of April,

HENRY H. LAMPERT.

